US8770961B2 - Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts - Google Patents

Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts Download PDF

Info

Publication number
US8770961B2
US8770961B2 US13/391,499 US201013391499A US8770961B2 US 8770961 B2 US8770961 B2 US 8770961B2 US 201013391499 A US201013391499 A US 201013391499A US 8770961 B2 US8770961 B2 US 8770961B2
Authority
US
United States
Prior art keywords
mold
fixing bolt
recess
transmission shaft
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US13/391,499
Other languages
English (en)
Other versions
US20120148703A1 (en
Inventor
Yves-Alban Duclos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sidel Participations SAS
Original Assignee
Sidel Participations SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sidel Participations SAS filed Critical Sidel Participations SAS
Assigned to SIDEL PARTICIPATIONS reassignment SIDEL PARTICIPATIONS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DUCLOS, YVES-ALBAN
Publication of US20120148703A1 publication Critical patent/US20120148703A1/en
Application granted granted Critical
Publication of US8770961B2 publication Critical patent/US8770961B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/30—Mounting, exchanging or centering
    • B29C33/305—Mounting of moulds or mould support plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4856—Mounting, exchanging or centering moulds or parts thereof
    • B29C2049/4864—Fixed by a special construction to the mould half carriers, e.g. using insulating material between the mould and the mould half carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4889—Mould halves consisting of an independent neck, main and bottom part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2949/00—Indexing scheme relating to blow-moulding
    • B29C2949/07—Preforms or parisons characterised by their configuration
    • B29C2949/0715—Preforms or parisons characterised by their configuration the preform having one end closed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/20—Opening, closing or clamping
    • B29C33/26—Opening, closing or clamping by pivotal movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/06—Injection blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/08—Biaxial stretching during blow-moulding
    • B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
    • B29C49/12—Stretching rods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the present invention concerns a molding device for a machine for producing containers, notably bottles.
  • the present invention more particularly concerns a molding device for a machine for producing containers, notably bottles, in thermoplastic material by blowing or drawing-blowing a preform, the molding device including:
  • Plastic material containers such as bottles, flasks, etc. are produced therein from preforms or blanks pre-heated in a heat treatment oven. Depending on the number of imprints in the molds, one or more preforms are fed in this way to a station of the machine to be inserted into a molding device with which blowing or drawing-blowing means are associated.
  • Such molding devices include at least one mold constituted of two half-molds supported by respective mold-carriers that are mounted to be mobile relative to each other.
  • Each half-mold is generally fixed to an associated mold-carrier in a removable manner by fixing means in order to enable demounting for a change of mold, in particular to proceed to the production of containers of different shapes and/or different sizes or to replace them in the event of damage to and/or wear of the half-molds.
  • means for regulating the temperature of the imprints of each half-mold are produced in a part (called the shell-carrier in the above document) separate from the half-mold (called a shell in the above document).
  • the shell-carrier is intended to be fixed permanently to the mold-carrier, whereas the half-mold provided with the half-imprint is adapted to be removably fastened to the shell-carrier by fast fixing means. This configuration enables a light half-mold to be produced that is easily manipulated by a single operator.
  • the means for fixing the half-mold onto the mold-carrier are disposed on respective edges of the half-mold and the shell-carrier that are parallel to the main axis of the imprint.
  • These fixing means include in particular a locking lug mounted on the mold-carrier in a fixed or mobile manner projecting over the joint face of the half-mold to fix the half-mold firmly to the shell-carrier.
  • the half-mold is clamped against the bottom of the recess by fast screwing of the locking lugs onto a joint face of the mold-carrier.
  • the mounting and demounting operations are carried out by at least one operator and require the use of tools, such as screwdrivers, to demount the fixing bar with the mold-carriers in the open position.
  • the document WO-A-2007/012308 proposes to clamp the half-mold against the bottom of the recess by means of a set of springs that are interleaved between a drive element and a base element that carries the locking lugs.
  • the movement of the control element enables, over a first part of its travel, driving of the movement of the locking lugs between a retracted position and an active position, and then, over a second part of its travel, clamping of the locking lugs in the active position against the half-mold by way of the springs.
  • the aim is therefore to reduce further the time necessary for mounting and demounting the half-molds in such a manner as to reduce further the intervention time, by means of fast fixing means that are simple and of relatively low cost to manufacture.
  • each fixing bolt and/or the associated half-mold includes a clamping ramp that is inclined in such a manner as to press the half-mold against the bottom of the recess on sliding of said fixing bolt from its retracted position to its active position.
  • FIG. 1 is a perspective view showing a blowing device produced according to the teachings of the invention and including two mold-carriers provided with their half-mold, the mold-carriers being in the open position;
  • FIG. 2 is a perspective view showing the two half-molds from FIG. 1 in a separated position
  • FIG. 3 is a perspective view showing the two half-molds from FIG. 2 in a joined position
  • FIG. 4 is a view similar to that of FIG. 1 showing the two mold-carriers in a closed position
  • FIG. 5 is a perspective view showing a mold-carrier including a controlled fixing device in its retracted position and a half-mold in a demounted position;
  • FIG. 6 is a front view showing the mold-carrier from FIG. 5 and in which the half-mold is mounted and fixed;
  • FIG. 7 is a view in section taken along the line 7 - 7 in FIG. 6 showing a fixing bolt in its active position
  • FIG. 8 is a view similar to that of FIG. 6 showing the half-mold mounted in but not fixed to the mold-carrier, the fixing device being retracted;
  • FIG. 9 is a view in section taken along the line 9 - 9 in FIG. 8 showing the fixing bolt in its retracted position
  • FIG. 10 is an exploded perspective view showing a transmission shaft of the drive means of the fixing device and a border bar of the mold-carrier in which it is to be mounted;
  • FIG. 11 is an exploded perspective view that shows the shaft mounted in the border bar, the bolts to be slidably mounted in the border bar and the screws fixing the border bar to the mold-carrier;
  • FIG. 12 is a view in section taken along the line 12 - 12 in FIG. 1 showing a safety device that locks the bolts in the active position.
  • each mold-carrier 32 indicated by the orthogonal frame of reference “L,V,T” for the first mold-carrier 32 on the left in FIG. 1 and “L′,V,T” for the second mold-carrier on the right in FIG. 2 .
  • the transverse directions “T” and “T” and the longitudinal directions “L” and “L” are fixed relative to each mold-carrier 34 .
  • the longitudinal direction “L”, “L” is oriented from the rear toward the front in the direction of the other mold-carrier 32 when the mold-carriers 32 are in the closed position.
  • FIG. 1 There is shown in FIG. 1 a molding device 10 for a machine (not shown) for production of thermoplastic material containers, in particular bottles, by blowing or drawing-blowing a pre-heated preform.
  • the molding device 10 shown in FIG. 1 nevertheless constitutes only one nonlimiting embodiment of the type of molding device 10 to which fixing means produced according to the teachings of the invention may be applied.
  • the molding device 10 shown in FIG. 1 is more particularly intended to equip a station of a “rotary” type production machine, i.e. one generally including a carousel at the circumference of which are disposed stations each comprising a molding device 10 associated with blowing or drawing-blowing means, also known as blowing nozzles.
  • a “rotary” type production machine i.e. one generally including a carousel at the circumference of which are disposed stations each comprising a molding device 10 associated with blowing or drawing-blowing means, also known as blowing nozzles.
  • the fixing means of the invention may equally well be used in a production machine of linear (and not rotary) type.
  • the molding device 10 includes at least one mold 12 constituted of two half-molds 14 that are mirror images or each other with respect to their joint plane.
  • the mold 12 has a cylindrical shape divided axially into two parts to form each half-mold 14 .
  • each half-mold 14 includes a half-imprint 16 of the final container recessed into a front joint face 18 .
  • the joint face 18 is a plane vertical transverse face that is formed by the section face of the cylinder forming the mold 12 .
  • the half-molds 14 are adapted to occupy a separated position, as shown in FIG. 2 , in which the two half-molds 14 are spaced from each other, and a joined position, as shown in FIG. 3 , in which the two half-molds 14 are joined together at their joint face 18 to form the mold 12 .
  • Each half-mold 14 further includes a rear face 20 opposite the joint face 18 and having the overall shape of a circular half-cylinder substantially coaxial with the vertical main axis “X” of the imprint 16 of the container.
  • Each half-mold 14 has two vertically oriented rectilinear edges 22 at the junction between its joint face 18 and its rear face 20 .
  • the mold 12 In the joined position, the mold 12 has a circular horizontal upper face 24 with a central opening 26 adapted to enable entry of the blowing air, or even of a drawing rod.
  • each half-mold 14 is preferably formed by two separate plates 28 each of which is firmly attached to a half-mold 14 .
  • the lower end of a nozzle (not shown) comprising the blowing or drawing-blowing means is adapted to come into contact with the upper face 24 formed by the two plates 28 .
  • the half-molds 14 further include in their upper part, just below the horizontal upper face, an annular groove 30 that extends circumferentially and continuously around the two half-molds 14 when they are joined.
  • the container to be produced has a bottom of complex shape, in particular a petal shape, problems are likely to arise with removal from the mold.
  • Each half-mold 14 is intended to be demountably fixed to an associated mold-carrier 32 of the molding device 10 .
  • Such mold-carriers 32 are shown in more detail in FIGS. 1 and 4 .
  • the two mold-carriers 32 are mounted to be mobile relative to each other between a closed position, as shown in FIG. 4 , in which the two half-molds 14 are joined to form the imprint 16 , and an open position, as shown in FIG. 1 , in which the two half-molds 14 are separated, for example to enable extraction of a container after blowing.
  • the mold-carriers 32 are constituted in the form of two carrier structures articulated about a common hinge 34 with a vertical pivot axis “O”.
  • the hinge 34 is generally carried by a bracket (not shown) that is fixed relative to the carousel.
  • the mold-carriers 32 are then able to move apart from each other by pivoting about the axis “O” and are consequently mounted to pivot between their open position ( FIG. 1 ) and their closed position ( FIG. 4 ).
  • such a molding device 10 is referred to as a “book-like opening” mold.
  • the molding device includes two mold-carriers mounted to be mobile in translation relative to each other in a longitudinal direction between an open position and a closed position.
  • the molding device 10 further includes a lock 36 that is transversely disposed diametrically opposite the hinge 34 relative to the vertical axis “X” of the imprint 16 , as shown in FIG. 4 .
  • This kind of lock 36 is also known in the art and is therefore not described in more detail here.
  • This lock 36 has the notable function of preventing any inopportune opening during blowing, where the pressures may reach 40 bars, depending on the application.
  • the mold-carriers 32 and the half-molds 14 being substantially mirror images of each other with respect to the joint plane of the mold-carrier 32 , there is described hereinafter only the mold 12 situated on the left in FIG. 1 , the description being applicable to the other by reason of their symmetry.
  • the half-mold 14 is more particularly adapted to be received in a recess 38 of the associated mold-carrier 32 to occupy a mounted position.
  • the molding device 10 includes fixing means that are adapted to fix each half-mold 14 demountably in the mounted position in the recess 38 of the associated mold-carrier 32 . These means are described in more detail hereinafter.
  • the recess 38 is delimited longitudinally toward the rear by a concave bottom 40 of semi-cylindrical shape complementary to the rear face 20 of the half-mold 14 .
  • the recess 38 is delimited in the vertically upward direction by the lower face of a rim 42 that extends radially inward, projecting relative to the bottom 40 of the recess 38 .
  • the groove 30 in the half-mold 14 is adapted to be nested longitudinally with this rim 42 to enable vertical positioning and retention of the half-mold 14 relative to the mold-carrier 32 .
  • the entry of the recess 38 is furthermore delimited transversely on the one hand by a first vertical edge 44 and on the other hand by a second vertical edge 46 .
  • the edge 46 situated in the vicinity of the hinge 34 is referred to as the proximal edge and the edge 44 farther away from the hinge 34 is referred to as the distal edge.
  • Each of the distal and proximal edges 44 , 46 , respectively, of the recess 38 is bordered by a distal vertical border bar 45 , a proximal vertical border bar 47 , respectively, that is fixedly attached to the structure of the mold-carrier 32 by rigid fixing means such as screws 48 .
  • Each border bar 45 , 47 has a rectangular or square contour horizontal section.
  • Each border bar 45 , 47 is in particular delimited longitudinally by a vertical transverse front mating face 50 , visible in FIG. 5 , and by a vertical transverse rear contact face 51 , visible in FIG. 10 , by which it is fixed to the mold-carrier 32 .
  • Each border bar 45 , 47 is also delimited transversely by two lateral faces 53 respectively interior and exterior relative to the recess 38 .
  • each border bar 45 , 47 is intended to come into plane contact with the mating face 50 of a facing border bar 45 , 47 of the other mold-carrier 32 when the mold-carriers 32 in their closed position.
  • its joint face 18 is substantially coplanar with the mating faces 50 of the border bars 45 , 47 that border the recess 38 , as is particularly visible in FIG. 1 .
  • the mold-carrier 32 is provided with means (not shown) for regulating the temperature of the imprint 16 that are formed by conduits formed in the thickness of the bottom 40 of the recess 38 and in which a heat-exchange fluid circulates.
  • the rear face 20 of the half-mold 14 and the bottom 40 of the recess 38 of the mold-carrier 32 are in clamped contact, pressed against each other. Accordingly, the transmission of heat between the half-mold 14 and the mold-carrier 32 is obtained by conduction between the rear face 20 of the half-mold 14 and the bottom 40 of the recess 38 .
  • the molding device 10 includes fixing means adapted to fix each half-mold 14 occupying a mounted position in a demountable manner to the mold-carrier 32 .
  • These fixing means are also adapted to clamp the half-mold 14 against the bottom 40 of the associated recess 38 of the mold-carrier 32 to press the rear face 20 of the half-mold 14 against the bottom 40 of the recess 38 .
  • the fixing means for only one module-carrier 32 are described hereinafter, the fixing means for the other mold-carrier 32 being identical.
  • the fixing means are at least in part controllable.
  • the controllable fixing means are disposed only at the border of the distal edge 44 of the recess 38 , the other, proximal edge 46 being equipped with passive fixing means.
  • the passive fixing means include at least one lug 52 for locking the half-mold 14 in the mounted position that is carried in fixed manner by the mold-carrier 32 at the border of the proximal edge 46 .
  • locking lugs 52 distributed along the proximal edge 46 of the recess 38 . They project transversely inward relative to the proximal edge 46 of the bottom 40 of the recess 38 .
  • the locking lugs 52 are flush with or longitudinally set back rearwardly relative to the joint face 18 of the half-mold 14 in the mounted position in order to prevent any interference on closing the mold 12 .
  • Each locking lug 52 is intended to be received in a rebate 54 produced in the corresponding edge 22 of the half-mold 14 .
  • the locking lugs 52 are more particularly intended to be pressed longitudinally against a transverse vertical front fixing face 56 of the half-mold 14 in the bottom of the rebate 54 .
  • the locking lugs 52 are all carried by the common proximal border bar 47 , sometimes referred to as the “black bar”.
  • the proximal border bar 47 is permanently fixed to the mold-carrier 32 , for example by means of screws 48 . These locking lugs 52 are thus intended to remain in place during operations of changing the half-mold 14 .
  • the controllable fixing means include at least one fixing bolt 58 that is mounted in the mold-carrier 32 to be mobile between:
  • each fixing bolt 58 is set back longitudinally toward the rear relative to, or at least flush with, the joint face 18 of the half-mold 14 .
  • each fixing bolt 58 is advantageously mounted to be mobile in such a manner as not to project longitudinally toward the front beyond the joint face 18 of the half-mold 14 at any point on its trajectory between its two positions. This enables driven movement of the fixing bolt 58 even when the mold-carriers 32 are in their closed position.
  • each fixing bolt 58 is intended to be received in an associated rebate 54 produced in the corresponding edge 22 of the half-mold 14 when the half-mold 14 is in its mounted position.
  • the vertical transverse bottom of each rebate 54 forms a fixing face 56 of the half-mold 14 .
  • the rebate is replaced by a mortise produced in the half-mold.
  • the mold-carrier 32 includes at least two fixing bolts 58 at the border of the distal edge 44 of the entry of the recess 38 .
  • the fixing bolt 58 has a globally parallelepipedal shape here. It is delimited longitudinally by a plane rear vertical face forming the locking face 60 and by a plane front vertical face 64 .
  • each fixing bolt 58 is more particularly mounted to slide transversely in an associated bolt passage 66 produced in the first distal border bar 45 that opens transversely at least in the direction of the interior of the recess 38 .
  • each bolt passage 66 is delimited vertically by two horizontal guide faces 68 and longitudinally toward the front by a front guide face 70 .
  • the bolt passage 66 opens into the rear contact face 51 of the distal border bar 45 .
  • the fixing bolt 58 is also guided as it slides transversely by a vertical rear face 72 of the mold-carrier 32 in the vertical transverse plane of the entry of the recess 38 .
  • each fixing bolt 58 slides on the border of the distal edge 44 of the entry of the recess 38 .
  • the fixing bolt 58 In its active position ( FIG. 7 ), the fixing bolt 58 projects transversely relative to the associated distal edge 44 of the entry of the recess 38 . In its retracted position ( FIG. 9 ) the fixing bolt 58 is totally retracted relative to said distal edge 44 of the entry of the recess 38 .
  • each fixing face 56 of the half-mold 14 on the distal side is slightly longitudinally forward of the locking face 60 of the fixing bolt 58 .
  • each fixing bolt 58 includes a clamping ramp 74 that is inclined in such a manner as to press the associated fixing face 56 in the direction of the bottom 40 of the recess 38 when said fixing bolt 58 slides from its retracted position to its active position. Accordingly, each distal side fixing face 56 of the half-mold 14 is then slightly set back longitudinally toward the rear in such a manner as to be pressed against the locking face 60 of the fixing bolt 58 .
  • the clamping ramp 74 is formed by a bevel formed in the interior transverse vertical edge at the edge of the locking face 60 .
  • the clamping ramp 74 has a rounded appearance.
  • clamping ramp is carried by the half-mold.
  • the bolt and the half-mold are both equipped with an associated clamping ramp.
  • the two ramps then cooperate by sliding on each other to clamp the half-mold to the bottom of the recess.
  • each fixing bolt 58 is driven by drive means that are integrated into the mold-carrier 32 .
  • the drive means include a vertical transmission shaft 76 that is rotatably mounted in the mold-carrier 32 .
  • the transmission shaft 76 is received in a vertical hole 78 produced in the upper end of the distal border bar 45 .
  • the vertical hole thus forms a bearing 78 to enable the transmission shaft 76 to turn about a vertical rotation axis “Y”.
  • the transmission shaft 76 is connected to each fixing bolt 58 by a cam mechanism that transforms rotation movement of the transmission shaft 76 into sliding movement of the fixing bolts 58 .
  • the transmission shaft 76 is here connected to each fixing bolt 58 by a so-called “cam and frame” mechanism.
  • the transmission shaft 76 includes three cams 80 that are formed by three circular cylindrical sections with a vertical axis that are arranged eccentrically relative to the rotation axis “Y” of the transmission shaft 76 . These cams 80 are therefore referred to hereinafter as “eccentric sections 80 ”.
  • the eccentric sections 80 are arranged to coincide with the bolt passages 66 when the transmission shaft 76 is mounted by inserting it into its bearing 78 , as shown in FIG. 11 .
  • each eccentric section 80 here has a diameter that coincides in size and in position with a radius of the transmission shaft 76 .
  • Each fixing bolt 58 has in its front face 64 a vertical groove 82 opening vertically at each end that is intended to receive a corresponding eccentric section 80 of the transmission shaft 76 . This is shown in more detail in FIGS. 7 and 9 , for example.
  • the groove 82 more specifically has a transverse width substantially equal to the diameter of the eccentric section 80 and a longitudinal depth that allows longitudinal sliding of the eccentric section 80 in the groove 82 during rotation of the transmission shaft 76 through at least one half-turn.
  • the transmission shaft 76 is thus connected to each fixing bolt 58 by a cam and frame mechanism that transforms rotation movement of the transmission shaft 76 into transverse sliding movement of the fixing bolts 58 . Rotation of the transmission shaft 76 also drives retraction and deployment of the fixing bolt 58 between its two positions.
  • the means for transforming rotation movement of the shaft into sliding movement of the fixing bolt are formed by a pinion carried by the shaft that cooperates with a rack constrained to slide with the fixing bolt to drive the sliding of the fixing bolt.
  • the transmission shaft is a cranked shaft that is articulated to the fixing bolt via a link to transform rotation movement of the shaft into sliding movement of the fixing bolt.
  • the shaft carries a cam that actively drives sliding movement of the bolt towards one position, the bolt being spring-loaded toward its other position.
  • the drive means are intended here to be operated manually by an operator without using an individual tool.
  • the drive means include at least one handle 84 that is intended to be operated manually by an operator to drive sliding of each fixing bolt 58 between its two positions.
  • the handle 84 is formed by an arm that extends orthogonally to the transmission shaft 76 and is fixed to the upper end of the transmission shaft 76 so that it is constrained to rotate about the vertical rotation axis “Y” with the transmission shaft 76 .
  • the upper end of the transmission shaft 76 projects from the vertical hole 78 in the distal border bar 45 .
  • the arm forming the handle 84 is above an upper face of the mold-carrier 32 .
  • the arm forming the handle 84 is sufficiently long to enable the operator to apply by hand a torque necessary for clamping the half-mold 14 to the bottom 40 of the recess 38 .
  • the torque is also sufficient to overcome the friction of the locking face 60 of each fixing bolt 58 against the associated fixing face 56 of the half-mold 14 when the fixing bolts 58 are retracted to demount the half-mold 14 .
  • an indexing finger 86 extends vertically downward under the arm forming the handle 84 .
  • the indexing finger 86 is adapted to abut against a vertical shoulder face 88 of the mold-carrier 32 when the fixing bolts 58 are in their active position. The operator who operates the locking device is thus informed by the contact of the indexing finger 86 with the shoulder face 88 that the fixing bolts 58 are in their active position.
  • the arm forming the handle 84 is pushed above the mold-carrier 32 in such a manner as to be accessible even when the mold-carriers 32 are in their closed position. As shown in FIG. 6 , in this position the arm forming the handle 84 does not project radially outwards relative to the exterior contour of the mold-carrier 32 .
  • the end of the arm that is fixed to the transmission shaft is conformed in such a manner that that the shaft may be turned toward the retracted position of the fixing bolts even in the closed position of the mold-carrier.
  • Said end of the arm is of semicircular shape, for example, which enables the transmission shaft to turn without interfering with the arm of the other mold-carrier.
  • the drive means To prevent the drive means being triggered inopportunely when the half-mold 14 is fixed to the mold-carrier 32 , it includes a safety device for locking the fixing bolts 58 in their active position.
  • the locking device is formed by a vertical axis peg 90 that is mounted on the arm forming the handle 84 of the transmission shaft 76 .
  • the peg 90 is more particularly mounted to slide vertically in the indexing finger 86 between a low position in which it may be inserted into a complementary locking orifice 92 of the mold-carrier 32 when the fixing bolts 58 are in their active position and a high position in which the peg 90 is completely extracted from the locking orifice 92 .
  • the upper end of the peg 90 is connected to a button 94 that enables the operator to pull the peg 90 toward its high position to enable the transmission shaft 76 to be turned in such a manner as to drive the fixing bolts 58 toward their retracted position.
  • the peg 90 is advantageously spring-loaded into its low position in order to automate the safety device, for example by a spring (not shown) that is placed around the peg 90 , in a cylindrical internal chamber of the finger 86 .
  • the spring bears on the one hand on a lower internal wall of the finger and on the other hand on a lower wall of the button 94 .
  • the mold-carrier 32 further includes an inclined plane 96 that is disposed on the trajectory of the peg 90 on rotation of the transmission shaft 76 toward the active position of the fixing bolts 58 .
  • This inclined plane 96 enables the peg 90 to be driven automatically toward its high position on rotation of the transmission shaft 76 toward the active position of the fixing bolts 58 . Accordingly, the lower free end of the peg 90 is able to slide automatically along the inclined plane 96 and then a horizontal plane as far as the locking orifice 92 in which it is spring-loaded into its low position.
  • the distal border bar 45 is demounted from the mold-carrier 32 .
  • the transmission shaft 76 is first inserted vertically into the bearing 78 of the distal border bar 45 until the arm forming the handle 84 comes into abutment.
  • the fixing bolts 58 are then inserted longitudinally into the bolt passages 66 opening onto the rear contact face 51 , before the distal border bar 45 is fixed to the mold-carrier 32 by the fixing screws 48 . This operation is shown in FIG. 11 .
  • the fixing bolts 58 are therefore trapped in their bolt passage 66 by interengagement with the eccentric sections 80 .
  • the shanks of said screws 48 also cooperate with annular grooves 98 of the transmission shaft 76 , visible in FIG. 10 , to retain the transmission shaft 76 vertically in position in the distal border bar 45 .
  • the operator proceeds first to demount a first mold 12 .
  • the operator first moves the mold-carriers 32 equipped with a first mold 12 apart into their open position.
  • the fixing bolt 58 being in its active position, as shown in FIG. 7 , the anticlockwise rotation of the transmission shaft 76 presses the eccentric section 80 against the external wall of the groove 82 , thereby causing the fixing bolt 58 to slide transversely toward its retracted position.
  • the transmission shaft 76 and its arm forming the handle 84 are then in the position shown in FIG. 8 .
  • the fixing bolts 58 are therefore in their retracted position.
  • the half-mold 14 of the first mold 12 to be changed being released and loosened, the operator grasps the half-mold 14 to remove it by a first pivoting movement about its vertical axis “X” to disengage the half-mold 14 from the fixed locking lugs 52 and then movement in longitudinal translation in the forward direction of the half-mold 14 that has been pivoted in this manner.
  • the half-mold 14 of the replacement second mold 12 is then mounted on the mold-carrier 32 by the reverse movements of translation and then pivoting.
  • the transmission shaft 76 is turned clockwise in such a manner that the eccentric section 80 bears on the interior wall of the groove 82 to cause each fixing bolt 58 to slide.
  • the clamping ramp 74 enables the rear face 20 of the half-mold 14 to be clamped against the bottom 40 of the recess 38 , after which the blocking face 60 enables clamping.
  • the peg 90 is automatically driven into its high position by the inclined plane 96 .
  • the peg 90 is then returned by spring means into its low position in the locking orifice 92 when the indexing finger 86 abuts against the shoulder face 88 of the mold-carrier 32 .
  • the fixing bolts 58 are then in their active position.
  • the locking lugs of the proximal edge of the entry of the recess are replaced by locking means with retractable bolts similar to the means just described for the distal edge. Sliding of all the fixing bolts of the proximal edge is advantageously driven by a common second transmission shaft.
  • the recess of the mold-carrier is advantageously designed so that the half-mold is mounted in and demounted from its recess by a single movement in translation parallel to the opening of the mold formed by the two half-molds, here by a longitudinal movement.
  • the two edges of the recess are released simultaneously by the fixing bolts. It is then no longer necessary to pivot the half-mold 14 when mounting and demounting it.
  • each bolt is formed by a trapped ball mobile in the bolt passage 66 .
  • a dome portion of the ball projects from the bolt passage when the bolt is in its active position.
US13/391,499 2009-09-07 2010-08-31 Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts Active 2030-11-17 US8770961B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0956080A FR2949706A1 (fr) 2009-09-07 2009-09-07 Dispositif de moulage equipe de moyens commandes de fixation avec serrage d'un demi-moule par des penes de fixation coulissants
FR0956080 2009-09-07
PCT/EP2010/062675 WO2011026828A1 (fr) 2009-09-07 2010-08-31 Dispositif de moulage équipé de moyens commandés de fixation avec serrage d'un demi-moule par des pênes de fixation coulissants

Publications (2)

Publication Number Publication Date
US20120148703A1 US20120148703A1 (en) 2012-06-14
US8770961B2 true US8770961B2 (en) 2014-07-08

Family

ID=42136053

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/391,499 Active 2030-11-17 US8770961B2 (en) 2009-09-07 2010-08-31 Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts

Country Status (6)

Country Link
US (1) US8770961B2 (zh)
EP (1) EP2475511B1 (zh)
CN (1) CN102481722B (zh)
FR (1) FR2949706A1 (zh)
MX (1) MX342970B (zh)
WO (1) WO2011026828A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140017353A1 (en) * 2011-03-30 2014-01-16 S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A. Blow mould
WO2017062346A1 (en) 2015-10-05 2017-04-13 Milacron Llc Blow mold assembly
US10052810B2 (en) 2015-10-05 2018-08-21 Milacron Llc Blow mold assembly

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2012002242A (es) * 2009-09-07 2012-04-11 Sidel Participations Metodo para cambiar un molde.
FR2949709B1 (fr) * 2009-09-08 2011-10-07 Sidel Participations Machine pour la fabrication de recipients comportant un module de commande de dispositifs d'une unite de moulage en vue d'operer un changement de moule
WO2012177252A1 (en) * 2011-06-22 2012-12-27 Halliburton Energy Services, Inc. Custom shaped blank
ITPR20110073A1 (it) * 2011-08-05 2013-02-06 Gea Procomac Spa Semiporzione di formatura di un recipiente a partire da una preforma in materiale plastico, stampo di formatura e procedimento per sostituire uno stampo di formatura
US9937047B2 (en) * 2011-12-06 2018-04-10 Zimmer, Inc. Spacer mold for orthopedic implants
ITUB20160870A1 (it) * 2016-02-19 2017-08-19 Sipa Progettazione Automaz Stampo di soffiaggio
DE102017114927A1 (de) * 2017-07-04 2019-01-10 Krones Aktiengesellschaft Vorrichtung und Verfahren zum Umformen von Kunststoffvorformlingen zu Kunststoffbehältnissen mit Dämpfungsmittel an den Formträgern und Formhälften
CN109834943A (zh) * 2019-01-31 2019-06-04 宁波市阳光汽车配件有限公司 汽车遮阳板发泡聚丙烯骨架的热合装置及骨架和制备方法
CN110126238A (zh) * 2019-05-16 2019-08-16 广州达意隆包装机械股份有限公司 一种吹瓶机模架相对高度调节装置
CN114434693A (zh) * 2021-12-29 2022-05-06 北京航星机器制造有限公司 一种适用于高温的更换模具工装

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552366A1 (fr) 1983-09-28 1985-03-29 Valeo Dispositif de fixation d'une partie de moule sur un support, en particulier dans une machine de moulage
FR2646802A1 (fr) 1989-05-11 1990-11-16 Sidel Sa Dispositif de verrouillage pour moule de type portefeuilles et moules incorporant un tel dispositif
WO1996033059A1 (fr) 1995-04-19 1996-10-24 Sidel Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage
FR2764544A1 (fr) 1997-06-16 1998-12-18 Sidel Sa Tuyere de soufflage de recipients en matiere plastique et installation pourvue d'une telle tuyere
US6428302B1 (en) * 2000-07-14 2002-08-06 Wentworth Mold Inc. Universal blow mold assembly
US20030082262A1 (en) 2001-10-25 2003-05-01 Alfred Effenberger Mold tool clamping device for blow mold machines
US6948924B2 (en) * 2003-04-11 2005-09-27 Wentworth Mold Inc. Mold assembly with modular mold shells
US20060233909A1 (en) 2005-04-18 2006-10-19 Graham Packaging Company, L.P. Quick change mold
WO2007012308A1 (de) 2005-07-25 2007-02-01 Sig Technology Ltd. Vorrichtung zur herstellung von blasformsegmenten
US7258538B2 (en) * 2005-02-02 2007-08-21 Uniloy Milacron Inc. Apparatus for blow molding
US20070212442A1 (en) * 2003-11-04 2007-09-13 Nonogaki Osmar K Blow Mode Shell With Volume Insert System For A Blowing Machine
US7887315B2 (en) * 2007-01-31 2011-02-15 Amcor Limited Blow mold design
US8070470B2 (en) * 2009-02-06 2011-12-06 Wentworth Mold Ltd. Mold assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200998604Y (zh) * 2007-02-06 2008-01-02 杨挺 一种遥控仿生物扑翼飞行玩具

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2552366A1 (fr) 1983-09-28 1985-03-29 Valeo Dispositif de fixation d'une partie de moule sur un support, en particulier dans une machine de moulage
FR2646802A1 (fr) 1989-05-11 1990-11-16 Sidel Sa Dispositif de verrouillage pour moule de type portefeuilles et moules incorporant un tel dispositif
WO1996033059A1 (fr) 1995-04-19 1996-10-24 Sidel Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage
US5968560A (en) 1995-04-19 1999-10-19 Sidel Blow molding device for producing thermoplastic containers
EP0821641B1 (fr) 1995-04-19 2000-08-02 Sidel Dispositif pour fabriquer des recipients en une matiere thermoplastique par soufflage ou etirage-soufflage
FR2764544A1 (fr) 1997-06-16 1998-12-18 Sidel Sa Tuyere de soufflage de recipients en matiere plastique et installation pourvue d'une telle tuyere
US6464486B1 (en) 1997-06-16 2002-10-15 Sidel Nozzle for blow molding plastic containers and installation provided with same
US6428302B1 (en) * 2000-07-14 2002-08-06 Wentworth Mold Inc. Universal blow mold assembly
US20030082262A1 (en) 2001-10-25 2003-05-01 Alfred Effenberger Mold tool clamping device for blow mold machines
DE10152050A1 (de) 2001-10-25 2003-05-08 Hesta Graham Gmbh & Co Kg Formwerkzeug-Spanneinrichtung für Blasformmaschinen
US6948924B2 (en) * 2003-04-11 2005-09-27 Wentworth Mold Inc. Mold assembly with modular mold shells
US20070212442A1 (en) * 2003-11-04 2007-09-13 Nonogaki Osmar K Blow Mode Shell With Volume Insert System For A Blowing Machine
US7258538B2 (en) * 2005-02-02 2007-08-21 Uniloy Milacron Inc. Apparatus for blow molding
US20060233909A1 (en) 2005-04-18 2006-10-19 Graham Packaging Company, L.P. Quick change mold
WO2007012308A1 (de) 2005-07-25 2007-02-01 Sig Technology Ltd. Vorrichtung zur herstellung von blasformsegmenten
US20090136613A1 (en) 2005-07-25 2009-05-28 Michael Linke Device for producing blow mold segments
US8038429B2 (en) * 2005-07-25 2011-10-18 Khs Corpoplast Gmbh & Co. Kg Device for producing blow mold segments
US7887315B2 (en) * 2007-01-31 2011-02-15 Amcor Limited Blow mold design
US8070470B2 (en) * 2009-02-06 2011-12-06 Wentworth Mold Ltd. Mold assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
International Search Report, dated Sep. 23, 2010, from corresponding PCT application.

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140017353A1 (en) * 2011-03-30 2014-01-16 S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A. Blow mould
US9186841B2 (en) * 2011-03-30 2015-11-17 S.I.P.A. Societa' Industrializzazione Progettazione E Automazione S.P.A. Blow mould
WO2017062346A1 (en) 2015-10-05 2017-04-13 Milacron Llc Blow mold assembly
US9688012B2 (en) * 2015-10-05 2017-06-27 Milacron Llc Blow mold assembly
CN108136653A (zh) * 2015-10-05 2018-06-08 米拉克龙有限责任公司 吹塑模具组件
US10052810B2 (en) 2015-10-05 2018-08-21 Milacron Llc Blow mold assembly
AU2016335983B2 (en) * 2015-10-05 2018-09-27 Milacron Llc Blow mold assembly
CN108136653B (zh) * 2015-10-05 2019-08-23 米拉克龙有限责任公司 吹塑模具组件

Also Published As

Publication number Publication date
CN102481722A (zh) 2012-05-30
EP2475511A1 (fr) 2012-07-18
WO2011026828A1 (fr) 2011-03-10
MX342970B (es) 2016-10-20
FR2949706A1 (fr) 2011-03-11
US20120148703A1 (en) 2012-06-14
EP2475511B1 (fr) 2014-04-09
CN102481722B (zh) 2014-09-24
MX2012002166A (es) 2012-04-11

Similar Documents

Publication Publication Date Title
US8770961B2 (en) Molding device provided with a controlled means for clampingly attaching a half-mold by means of slidable attachment bolts
CN102481720B (zh) 模具更换方法
US8591215B2 (en) Machine for manufacturing containers, including a system for providing assistance when changing moulds
US6918754B2 (en) Blow mold and blow-molding machine
CN102009442B (zh) 制造容器的机器，包括控制模制单元的装置以更换模具的模块
CN103459123B (zh) 吹塑模具
US10507624B2 (en) Blow moulding machine with automatically actuated base coupling
US8974211B2 (en) System for aiding in the replacement of a mould of a moulding unit of a machine for manufacturing containers
EP3272492B1 (en) Blow-mold unit and blow molding device using same
EP2202047B1 (en) Blowmould with locking device and the method
US8323019B2 (en) Blow mould apparatus with controlled locking mechanism
CN103415386A (zh) 用于为容器制造机器配备的模制单元更换模具的自动化系统
US8714958B2 (en) Blow mould assembly
JP2011025698A (ja) 成形ユニット取り付けシステム、および該システムを備える成形ユニット
CN101094759A (zh) 用于容器吹塑机的模具及用一该模具来制造容器的方法
CN109895235B (zh) 一种陶瓷自动注浆成型的模具夹具
US9457524B2 (en) Apparatus for shaping plastics material pre-forms into plastics material containers with pressure pads
CN106232322B (zh) 包括由固定支承件承载的模底致动部件的模制装置
US10647047B2 (en) Blow molding machine with automatically actuated base coupling
US10525617B2 (en) Tooling device for making a plastic film component
DE102015117273A1 (de) Blasformmaschine mit automatisch betätigbarer Bodenankopplung
CN105431277A (zh) 具有补偿部件的热塑性材料容器模制单元
CN109249561A (zh) 用于成型机的快速换模装置

Legal Events

Date Code Title Description
AS Assignment

Owner name: SIDEL PARTICIPATIONS, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DUCLOS, YVES-ALBAN;REEL/FRAME:027751/0284

Effective date: 20120120

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551)

Year of fee payment: 4

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1552); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 8